What are the three elements of a bipolar transistor? Are they the: w) grid, plate, cathode x) suppressor, deflector, target y) energizer, controller, terminus z) emitter, base, collector

What are the three elements of a bipolar transistor? Are they the: w) grid, plate, cathode x) suppressor, deflector, target y) energizer, controller, terminus z) emitter, base, collector
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Answer :

ANSWER: Z -- EMITTER, BASE, COLLECTOR
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As shown in the illustration, which of the elements listed does the line 'B' represent in the basic schematic symbol of a PNP transistor? EL-0068 A. Base B. Emitter C. Cathode D. Collector

Description : As shown in the illustration, which of the elements listed does the line 'B' represent in the basic schematic symbol of a PNP transistor? EL-0068 A. Base B. Emitter C. Cathode D. Collector

Last Answer : Answer: D

The common-emitter transistor circuit can amplify a small current signal because a small change in the signal current produces one of the following. Does the change in signal produce a large change in the: w) emitter-base voltage x) base current y) collector current z) collector voltage

Description : The common-emitter transistor circuit can amplify a small current signal because a small change in the signal current produces one of the following. Does the change in signal produce a large change in the: w) emitter-base voltage x) base current y) collector current z) collector voltage

Last Answer : ANSWER: Y -- COLLECTOR CURRENT

Which of the listed components does line 'C' represent for the transistor illustrated? EL-0068 A. Grid B. Plate C. Emitter D. Collector

Description : Which of the listed components does line 'C' represent for the transistor illustrated? EL-0068 A. Grid B. Plate C. Emitter D. Collector

Last Answer : Answer: C

The device in figure 'B' shown in the illustration will conduct when the ____________. EL-0067 A. base-emitter is forward biased and the collector-base is reverse biased B. anode-cathode is forward biased and the cathode-gate is forward biased C. source-gate is forward biased and the gate-drain is reversed biased D. terminal 1-2 is forward biased and the emitter-terminal 1 is reverse biased

Description : The device in figure 'B' shown in the illustration will conduct when the ____________. EL-0067 A. base-emitter is forward biased and the collector-base is reverse biased B. anode-cathode is forward ... is reversed biased D. terminal 1-2 is forward biased and the emitter-terminal 1 is reverse biased

Last Answer : Answer: B

The leads of the device in figure 'B' shown in the illustration are named _________. EL-0065 A. source, gate and drain B. emitter, base and collector C. emitter, base 1 and base 2 D. anode, cathode and gate

Description : The leads of the device in figure 'B' shown in the illustration are named _________. EL-0065 A. source, gate and drain B. emitter, base and collector C. emitter, base 1 and base 2 D. anode, cathode and gate

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Leads on the device in figure 'B' shown in the illustration are named ____________. EL-0067 A. source, gate and drain B. emitter, base and collector C. emitter, base 1 and base 2 D. anode, cathode and gate

Description : Leads on the device in figure 'B' shown in the illustration are named ____________. EL-0067 A. source, gate and drain B. emitter, base and collector C. emitter, base 1 and base 2 D. anode, cathode and gate

Last Answer : Answer: D

The leads of the device in figure 'A' shown in the illustration are named the _______________. EL-0065 A. source, gate and drain B. emitter, base and collector C. emitter, base 1 and base 2 D. anode, cathode and gate

Description : The leads of the device in figure 'A' shown in the illustration are named the _______________. EL-0065 A. source, gate and drain B. emitter, base and collector C. emitter, base 1 and base 2 D. anode, cathode and gate

Last Answer : Answer: C

Which of the following actions can be carried out in order to prevent thermal runaway in a transistor? A. Increase the current through the collector-base junction. B. Install a heat sink. C. Shift the 'Q' point to increase collector current. D. Increase the potential difference between the emitter and the base.

Description : Which of the following actions can be carried out in order to prevent thermal runaway in a transistor? A. Increase the current through the collector-base junction. B. Install a heat sink. ... point to increase collector current. D. Increase the potential difference between the emitter and the base.

Last Answer : Answer: B

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Description : A part of transistor which is heavily doped to produce large number of majority carriers is (a) Emitter (b) Base (c) Collector (d) any of above

Last Answer : (a) Emitter

In the transistor schematic symbol, the arrow ________ (a) located on emitter (b) located on base (c) located on collector (d) points from north to south

Description : In the transistor schematic symbol, the arrow ________ (a) located on emitter (b) located on base (c) located on collector (d) points from north to south

Last Answer : a) located on emitter

The operation of a transistor requires ______ (a) Emitter is heated (b) base is heated (c) collector be heated (d) none of above

Description : The operation of a transistor requires ______ (a) Emitter is heated (b) base is heated (c) collector be heated (d) none of above

Last Answer : (d) none of above

In n-p-n transistor, p works as ________ (a) Collector (b) emitter (c) base (d) any of above

Description : In n-p-n transistor, p works as ________ (a) Collector (b) emitter (c) base (d) any of above

Last Answer : c) base

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Description : The central region of transistor is called (a) Base (b) emitter (c) collector (d) neutral

Last Answer : (b) emitter

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Description : Steel is composed of a number of elements. The two essential elements are iron and w) aluminum x) carbon y) nickel z) silicon 

Last Answer : ANSWER: X -- CARBON

Which of the following elements was unknown to ancient civilizations? w) tin x) aluminum y) mercury z) sulfur

Description : Which of the following elements was unknown to ancient civilizations? w) tin x) aluminum y) mercury z) sulfur

Last Answer : ANSWER: X -- ALUMINUM

At room temperature, most elements are in which phase of matter? w) solid x) liquid y) gas z) plasma

Description : At room temperature, most elements are in which phase of matter? w) solid x) liquid y) gas z) plasma

Last Answer : ANSWER: W -- SOLID

To reverse the direction of rotation of a three-phase AC induction motor, do one of the following: w) reverse any two of the three-phase connections x) change the frequency of the applied AC power y) operate the motor below the stall torque at very high slip z) none of the above

Description : To reverse the direction of rotation of a three-phase AC induction motor, do one of the following: w) reverse any two of the three-phase connections x) change the frequency of the applied AC power y) operate the motor below the stall torque at very high slip z) none of the above

Last Answer : ANSWER: W -- REVERSE ANY TWO OF THE THREE-PHASE CONNECTIONS 

In p-n-p transistor, collector current is (a) Equal to emitter current (b) slightly less than emitter current (c) greater than emitter current (d) any of above

Description : In p-n-p transistor, collector current is (a) Equal to emitter current (b) slightly less than emitter current (c) greater than emitter current (d) any of above

Last Answer : (c) greater than emitter current

In the common–emitter transistor circuit, if the current gain is 100 and the collector current is 10 mA, the

Description : In the common–emitter transistor circuit, if the current gain is 100 and the collector current is 10 mA, the base current is: (1) 10 µA (2) 100 µA (3) 1 A (4) 10 A 

Last Answer : In the common–emitter transistor circuit, if the current gain is 100 and the collector current is 10 mA, the base current is: 100 µA

If a transistor were operated with emitter and collector interchanged, then

Description : If a transistor were operated with emitter and collector interchanged, then  1 .emitter current will increase  2. Collector current will increase  3. Base current will decrease  4. No current flow will take place 

Last Answer : If a transistor were operated with emitter and collector interchanged, then Collector current will increase 

If you started with 100 grams of each of the materials below and they all vaporized inside of an inflatable balloon, which of them would produce the largest volume balloon, assuming they were all at the same temperature? w) water x) gasoline y) ethanol z) butane

Description : If you started with 100 grams of each of the materials below and they all vaporized inside of an inflatable balloon, which of them would produce the largest volume balloon, assuming they were all at the same temperature? w) water x) gasoline y) ethanol z) butane 

Last Answer : ANSWER: W -- WATER 

Evaporation from water surfaces exposed to air is not dependent of the: w) velocity of the wind x) humidity y) temperature z) depth of the water

Description : Evaporation from water surfaces exposed to air is not dependent of the: w) velocity of the wind x) humidity y) temperature z) depth of the water 

Last Answer : ANSWER: Z -- DEPTH OF THE WATER 

For a DC motor, what major component in addition to the field winding and the armature winding is necessary? w) a commutator x) a stator y) a battery z) a rotor

Description : For a DC motor, what major component in addition to the field winding and the armature winding is necessary? w) a commutator x) a stator y) a battery z) a rotor

Last Answer : ANSWER: W -- A COMMUTATOR

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Description : Dante is the name of an eight-legged robot designed to repel into the crater of Erebus. This volcano is located in w) Italy x) the Hawaiian chain y) Antarctica z) Japan 

Last Answer : ANSWER: Y -- ANTARCTICA 

Who is known as the Father of the Atomic Bomb? w) Albert Einstein x) J. Robert Oppenheimer y) General Leslie Groves z) Edward Teller

Description : Who is known as the Father of the Atomic Bomb? w) Albert Einstein x) J. Robert Oppenheimer y) General Leslie Groves z) Edward Teller 

Last Answer : ANSWER: X -- J. ROBERT OPPENHEIMER

In 1991, the frozen body of a late stone age man was found amazingly intact in the Alps near the Italian-Austrian border. Its age was determined to be about: w) 2,200 years x) 5,300 years y) 12,800 years z) 30,000 years

Description : In 1991, the frozen body of a late stone age man was found amazingly intact in the Alps near the Italian-Austrian border. Its age was determined to be about: w) 2,200 years x) 5,300 years y) 12,800 years z) 30,000 years

Last Answer : ANSWER: X -- 5,300 YEARS

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Description : The sun makes up approximately what percent of matter in our solar system? w) 17% x) 50% y) 85% z) 99% 

Last Answer : ANSWER: Z -- 99% 

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Description : Deforestation is not a major environmental problem in w) the Amazon x) Borneo y) Oregon z) West Germany

Last Answer : ANSWER: Z -- WEST GERMANY 

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Description : Who was the first scientist credited with pointing out that certain gases could cause a greenhouse effect? w) John Tyndall x) Charles Darwin y) Roger Tory Peterson z) Stephen Jay Gould 

Last Answer : ANSWER: W -- JOHN TYNDALL  

What range of frequencies are usually referred to as the Ultra High Frequency (UHF) Band? w) 3 to 30 Mega Hertz x) 30 to 300 Mega Hertz y) 300 to 3,000 Mega Hertz z) 30,000 to 300,000 Mega Hertz

Description : What range of frequencies are usually referred to as the Ultra High Frequency (UHF) Band? w) 3 to 30 Mega Hertz x) 30 to 300 Mega Hertz y) 300 to 3,000 Mega Hertz z) 30,000 to 300,000 Mega Hertz

Last Answer : ANSWER: Y -- 300 to 3,000 MEGA HERTZ

Which of the following is considered a renewable resource? w) Coal fired power plant x) Hydroelectric dam y) Combustion turbine facility z) Nuclear fission power plant

Description : Which of the following is considered a renewable resource? w) Coal fired power plant x) Hydroelectric dam y) Combustion turbine facility z) Nuclear fission power plant 

Last Answer : ANSWER: X -- HYDROELECTRIC DAM

The U.S. EPA recently concluded that environmental tobacco smoke should be considered (quote) w) "a possible human teratogen" x) "a priority air pollutant" y) "a known human carcinogen" z) "a possible human carcinogen"

Description : The U.S. EPA recently concluded that environmental tobacco smoke should be considered (quote) w) "a possible human teratogen" x) "a priority air pollutant" y) "a known human carcinogen" z) "a possible human carcinogen" 

Last Answer : ANSWER: Y -- A KNOWN HUMAN CARCINOGEN 

TCDD (2,3,6,7-tetrachlorodibenzo(p)dioxin) is a toxic synthetic chemical. The most consistent adverse effect observed in exposed humans is: w) liver cancer x) birth defects y) disfiguring skin eruption z) an exaggerated sense of well-being

Description : TCDD (2,3,6,7-tetrachlorodibenzo(p)dioxin) is a toxic synthetic chemical. The most consistent adverse effect observed in exposed humans is: w) liver cancer x) birth defects y) disfiguring skin eruption z) an exaggerated sense of well-being

Last Answer : ANSWER: Y -- DISFIGURING SKIN ERUPTION (CHLORACNE) 

Compared to terrestrial environments, aquatic environments are more stable in: w) temperature range x) producer consumer distribution y) sunlight absorbed z) number species

Description : Compared to terrestrial environments, aquatic environments are more stable in: w) temperature range x) producer consumer distribution y) sunlight absorbed z) number species 

Last Answer : ANSWER: W -- TEMPERATURE RANGE

Approximately what percentage of the electricity produced in the United States is consumed by residential appliances? w) 20% x) 33% y) 50% z) 66%

Description : Approximately what percentage of the electricity produced in the United States is consumed by residential appliances? w) 20% x) 33% y) 50% z) 66% 

Last Answer : ANSWER: X -- 33% 

A radio station is broadcasting at 3750 khz (kilohertz). This station would be found in which radio band? w) 20 meter x) 40 meter y) 80 meter z) 160 meter

Description : A radio station is broadcasting at 3750 khz (kilohertz). This station would be found in which radio band? w) 20 meter x) 40 meter y) 80 meter z) 160 meter 

Last Answer : ANSWER: Y -- 80 METER 

A homeowner replaces a 65 watt incandescent bulb with a 15 watt compact fluorescent lamp. The light is on 2000 hours a year. If electricity cost 10 cents a kilowatt-hour, how much money is saved on the electric bill in one year? w) $50.00 x) $10.00 y) $5.00 z) $1.00

Description : A homeowner replaces a 65 watt incandescent bulb with a 15 watt compact fluorescent lamp. The light is on 2000 hours a year. If electricity cost 10 cents a kilowatt-hour, how much money is saved on the electric bill in one year? w) $50.00 x) $10.00 y) $5.00 z) $1.00 

Last Answer : ANSWER: X -- $10.00 

Which of the following people is credited as being the father of mass production? w) Thomas Edison x) Otto Graham y) Henry Ford z) Eli Whitney

Description : Which of the following people is credited as being the father of mass production? w) Thomas Edison x) Otto Graham y) Henry Ford z) Eli Whitney 

Last Answer : ANSWER: Z -- ELI WHITNEY

In daylight the human eye is most sensitive to which color? w) Green x) Red y) Blue z) Orange

Description : In daylight the human eye is most sensitive to which color? w) Green x) Red y) Blue z) Orange

Last Answer : ANSWER: W -- GREEN 

One trillion is 1 followed by 12 zeros. What is 1 followed by 18 zeros? w) 1 quadrillion x) 1 quintillion y) 1 septillion z) 1 octillion

Description : One trillion is 1 followed by 12 zeros. What is 1 followed by 18 zeros? w) 1 quadrillion x) 1 quintillion y) 1 septillion z) 1 octillion 

Last Answer : ANSWER: X -- 1 QUINTILLION  

In the Tyndall Effect, the intensity of scattered radiation is inversely proportional to the fourth power of the wavelength. Which one of the following colors of light would exhibit the most intense Tyndall scattering? w) yellow x) green y) orange z) violet

Description : In the Tyndall Effect, the intensity of scattered radiation is inversely proportional to the fourth power of the wavelength. Which one of the following colors of light would exhibit the most intense Tyndall scattering? w) yellow x) green y) orange z) violet 

Last Answer : ANSWER: Z -- VIOLET 

What form of radiation most closely resembles X-rays? w) alpha x) beta y) gamma z) neutron

Description : What form of radiation most closely resembles X-rays? w) alpha x) beta y) gamma z) neutron

Last Answer : ANSWER: Y -- GAMMA 

What is the approximate weight in pounds of the atmosphere on a 1 sq. ft. surface at sea level? w) 15 lbs. x) 1500 lbs. y) 2100 lbs. z) 20,000 lbs.

Description : What is the approximate weight in pounds of the atmosphere on a 1 sq. ft. surface at sea level? w) 15 lbs. x) 1500 lbs. y) 2100 lbs. z) 20,000 lbs. 

Last Answer : ANSWER: Y -- 2100 LBS.

A color television set employs a 25,000 volt electron accelerator to produce the picture and potentially harmful radiation which must be shielded against. The main component of this radiation consists of w) electrons which penetrate the picture tube x) soft x-rays y) microwaves z) ultraviolet radiation

Description : A color television set employs a 25,000 volt electron accelerator to produce the picture and potentially harmful radiation which must be shielded against. The main component of this radiation consists ... which penetrate the picture tube x) soft x-rays y) microwaves z) ultraviolet radiation 

Last Answer : ANSWER: X -- SOFT X-RAYS

Liquid fuels can be used to generate electricity in a variety of ways. Which of the following technologies converts liquid fuel directly to electricity without a combustion step? w) turbine x) battery y) fuel cell z) Stirling engine

Description : Liquid fuels can be used to generate electricity in a variety of ways. Which of the following technologies converts liquid fuel directly to electricity without a combustion step? w) turbine x) battery y) fuel cell z) Stirling engine

Last Answer : ANSWER: Y -- FUEL CELL  

In a precise diet and nutrition study, you need to determine the average weight and average height of a group each to a precision of 1%. The minimum sample size required is w) 10 x) 100 y) 1000 z) 10,000

Description : In a precise diet and nutrition study, you need to determine the average weight and average height of a group each to a precision of 1%. The minimum sample size required is w) 10 x) 100 y) 1000 z) 10,000 

Last Answer : ANSWER: Z -- 10,000 

The heat exhaust of an automobile with an internal combustion engine represents approximately what percent of the energy of the original fuel? w) 10 % x) 50 % y) 35 % z) 5 %

Description : The heat exhaust of an automobile with an internal combustion engine represents approximately what percent of the energy of the original fuel? w) 10 % x) 50 % y) 35 % z) 5 % 

Last Answer : ANSWER: Y -- 35 % 

The most abundant organic molecule on the surface of the Earth is: w) cellulose x) chitin y) DNA z) hemoglobin

Description : The most abundant organic molecule on the surface of the Earth is: w) cellulose x) chitin y) DNA z) hemoglobin  

Last Answer : ANSWER: W -- CELLULOSE

The estrogen and androgen hormones which regulate sexual development and function are structurally related to: w) beta carotene x) ethanol y) adrenaline z) cholesterol

Description : The estrogen and androgen hormones which regulate sexual development and function are structurally related to: w) beta carotene x) ethanol y) adrenaline z) cholesterol

Last Answer : ANSWER: Z -- CHOLESTEROL 

Some physicians suggest that women supplement their diets with antacids to supply additional amounts of a certain element thought to reduce the risk of osteoporosis. The ingredient in antacids which provides this element is: w) calcium carbonate x) aluminum hydroxide y) magnesium hydroxide z) simethicone

Description : Some physicians suggest that women supplement their diets with antacids to supply additional amounts of a certain element thought to reduce the risk of osteoporosis. The ingredient in antacids which ... element is: w) calcium carbonate x) aluminum hydroxide y) magnesium hydroxide z) simethicone 

Last Answer : ANSWER: W -- CALCIUM CARBONATE